FIrst of all, if the lady narrating this video is not kidding then she must be on crack. A government conspiracy based on rainbows appearing in a stream of water originating from a sprinkler?
In case she happens to stumble upon this post, I thought I’d let her know that rainbows are a result of a combination of naturally occurring phenomena: reflection, refraction and dispersion. Rainbows are an optical illusion that can occur wherever there is water and sun present. Geez, someone missed out on physical science class in the 5th grade. Thanks to @rsalvado12 for sharing this video.